A systems administrator is troubleshooting a connectivity issue with a newly deployed Windows server. The administrator can successfully ping the server's IP address from their workstation, but a remote management application that uses TCP port 8443 fails to connect. The administrator suspects a firewall rule is blocking the required port.
Which of the following commands would be the most effective next step to test connectivity to the specific port on the server from the workstation?
The correct command is telnet server.ip.address 8443. The telnet utility can be used from a client machine to test connectivity to a specific TCP port on a remote device. If the connection is successful (e.g., a blank screen appears), it confirms the port is open and reachable. A connection error indicates the port is closed or blocked by a firewall.
tracert is used to trace the network path to a host but does not test specific port availability.
netstat -an displays network connections and listening ports on the local machine where the command is run, not the remote server.
nslookup is used for DNS query diagnostics, which is irrelevant as the IP address is being used, not a hostname.